Question

java作业帮我做做啊

编写1个TubeLight类，该类是对管状灯的描述，它继承于Light类。还拥有：
（1）2个成员变量
tubeLength（私有，整型） //用于存放灯管的长度
color(私有，String类型) //用于存放灯光的颜色
（2）构造器方法
TubeLight（int watts, int tubeLength，String color） //用于创建具有watts瓦，灯管长度为tugeLength，颜色为color的对象
（3）成员方法
public void printInfo() //打印输出灯的相关信息，包括瓦数、开关信息、长度以及颜色
解：
（4）请写一个测试程序，要求：
①创建一个管状灯的实例对象，该灯瓦数为：32；长度为50；白色灯光，状态为开。
②打印输出该灯的相关信息。
Linght类如下：
class Linght{
Private int watts;
Private Boolean indicator;
Linght(int watts){this.watts=watts;}
Light(int watts,Boolean indicator)
{
this.watts=watts;
this.indicator=indicator;}
public void switchOn()
{this.indicator=true;}
public void switchOff()
{this.indicator=false;}
pulic void printInfo(){
System.out.println(“watts=”+watts);
System.out.println(“indicator =”+ indicator);
}}

Answer 1

class Light{
private int watts;
private boolean indicator;
Light(int watts){this.watts=watts;}
Light(int watts,boolean indicator){
this.watts=watts;
this.indicator=indicator;}
public void switchOn()
{this.indicator=true;}
public void switchOff()
{this.indicator=false;}
public void printInfo(){
System.out.println("watts="+watts);
System.out.println("indicator ="+ indicator);
}
}

class TubeLight extends Light{
private int tubeLength;//用于存放灯管的长度
private String color;//用于存放灯光的颜色
//用于创建具有watts瓦，灯管长度为tugeLength，颜色为color的对象
TubeLight(int watts,int tubeLength,String color) {
super(watts);
this.tubeLength=tubeLength;
this.color=color;
}
//打印输出灯的相关信息，包括瓦数、开关信息、长度以及颜色
public void printInfo() {
super.printInfo();
System.out.println("tubeLength="+tubeLength);
System.out.println("Color ="+ color);
}

}
public class TestLight {

public static void main(String[] args) {
// TODO code application logic here
TubeLight tube=new TubeLight(32,50,"white");
tube.switchOn();
tube.printInfo();
}
}

Answer 2

TubeLight类：
public class TubeLight extends Linght{
//私有成员变量
private int tubeLength;
private String color;
//构造方法
TubeLight(int watts,int tubeLenth, String color) {
super(watts);
this.tubeLength=tubeLenth;
this.color=color;
}
TubeLight(int watts,boolean indicator, int tubeLenth, String color) {
super(watts, indicator);
this.tubeLength=tubeLenth;
this.color=color;
}
//成员方法
public void printInfo(){
super.printInfo();
System.out.println("tubeLenth=" + this.tubeLength);
System.out.println("color=" + this.color);
}
}

测试程序：
public class Test {
public static void main(String[] args){
Linght lingth=new TubeLight(32,true,50,"white");
lingth.printInfo();
}
}

Answer 3

Class TubeLight extends Light{
private int tubeLength;
private String color;
public TubeLight（int watts, int tubeLength，String color）{
super(watts,true);
this.tubeLength=tubeLength;
this.color = color;
}
public void printInfo() {
this();
System.out.println(tubeLength=”+tubeLength);
System.out.println(color =”+ color);
}
public static void main(String[] args){
TubeLight light = new TubeLight(30,50,"white");
light.pringln();
}
}

Answer 4

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追问

怎么做啊？？